$ git clone -n https://src.fedoraproject.org/rpms/sysrepo.git /var/lib/mock/f38-build-side-42-init-devel-639128-26388/root/chroot_tmpdir/scmroot/sysrepo
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-639128-26388/root/chroot_tmpdir/scmroot/sysrepo'...
$ git fetch origin ad6b16c9a66ab9ec5cf42f67f9b7b776c8877632:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sysrepo
 * [new ref]         ad6b16c9a66ab9ec5cf42f67f9b7b776c8877632 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad6b16c Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild