There are a couple of shell scripts with odd syntax after the migration. See the following links for detail:

Missing space after ">>":

https://github.com/mongodb/mongo/blob/fc033384735fae02b3f5e9dd387f2a2c8c1e047b/evergreen/functions/added_and_modified_patch_files_get.sh#L9

Extra "~1":

https://github.com/mongodb/mongo/blob/fc033384735fae02b3f5e9dd387f2a2c8c1e047b/evergreen/functions/added_and_modified_patch_files_get.sh#L12

https://github.com/mongodb/mongo/blob/3044a445563dc41faa71b006fe7f253ae92e971e/evergreen/functions/modified_patch_files_get_all.sh#L16