$ git clone -n https://src.fedoraproject.org/rpms/golang-github-edwvee-exiffix.git /var/lib/mock/f41-build-4250-289/root/chroot_tmpdir/scmroot/golang-github-edwvee-exiffix
Cloning into '/var/lib/mock/f41-build-4250-289/root/chroot_tmpdir/scmroot/golang-github-edwvee-exiffix'...
$ git fetch origin 2e34f1aac572c744317069ecef1481dde9f9c056:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-edwvee-exiffix
 * [new ref]         2e34f1aac572c744317069ecef1481dde9f9c056 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2e34f1a import rhbz#2275042