$ git clone -n https://src.fedoraproject.org/rpms/ksirk.git /var/lib/mock/f42-build-863672-171728/root/chroot_tmpdir/scmroot/ksirk
Cloning into '/var/lib/mock/f42-build-863672-171728/root/chroot_tmpdir/scmroot/ksirk'...
$ git fetch origin b432678efc98803a5d5f8c80752c2c72be21e36f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ksirk
 * [new ref]         b432678efc98803a5d5f8c80752c2c72be21e36f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b432678 24.12.0