$ git clone -n https://src.fedoraproject.org/rpms/libirman.git /var/lib/mock/f39-build-1591903-38303/root/chroot_tmpdir/scmroot/libirman
Cloning into '/var/lib/mock/f39-build-1591903-38303/root/chroot_tmpdir/scmroot/libirman'...
$ git fetch origin d2ebcef23399e511100921c0bf1fe0ca02fe5e71:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libirman
 * [new ref]         d2ebcef23399e511100921c0bf1fe0ca02fe5e71 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2ebcef Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild