$ git clone -n https://src.fedoraproject.org/rpms/kosmindoormap.git /var/lib/mock/f42-build-side-1-3503855-45982/root/chroot_tmpdir/scmroot/kosmindoormap
Cloning into '/var/lib/mock/f42-build-side-1-3503855-45982/root/chroot_tmpdir/scmroot/kosmindoormap'...
$ git fetch origin 5acc23b91e033739cd268c75862ff6232744ff1d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kosmindoormap
 * [new ref]         5acc23b91e033739cd268c75862ff6232744ff1d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5acc23b Rebuild (qt6)