$ git clone -n https://src.fedoraproject.org/rpms/golang-gorm.git /var/lib/mock/f41-build-1036618-18741/root/chroot_tmpdir/scmroot/golang-gorm
Cloning into '/var/lib/mock/f41-build-1036618-18741/root/chroot_tmpdir/scmroot/golang-gorm'...
$ git fetch origin 39ca88c74fcc026c8e98250238b68bee85b80937:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-gorm
 * [new ref]         39ca88c74fcc026c8e98250238b68bee85b80937 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 39ca88c Fix FTBFS