$ git clone -n https://src.fedoraproject.org/rpms/tomcat-jakartaee-migration.git /var/lib/mock/f41-build-1037646-18804/root/chroot_tmpdir/scmroot/tomcat-jakartaee-migration
Cloning into '/var/lib/mock/f41-build-1037646-18804/root/chroot_tmpdir/scmroot/tomcat-jakartaee-migration'...
$ git fetch origin c79b0bb2032be3bb1f93d2343cb9894824ef291b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tomcat-jakartaee-migration
 * [new ref]         c79b0bb2032be3bb1f93d2343cb9894824ef291b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c79b0bb Initial import (fedora#2178003).