$ git clone -n https://src.fedoraproject.org/rpms/rust-comrak.git /var/lib/mock/f39-build-1628082-39423/root/chroot_tmpdir/scmroot/rust-comrak
Cloning into '/var/lib/mock/f39-build-1628082-39423/root/chroot_tmpdir/scmroot/rust-comrak'...
$ git fetch origin 4aa902ba04865035dacdf03c154a1130fde99f03:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-comrak
 * [new ref]         4aa902ba04865035dacdf03c154a1130fde99f03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4aa902b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild