$ git clone -n https://src.fedoraproject.org/rpms/dl-fedora.git /var/lib/mock/f38-build-side-42-init-devel-1007112-29377/root/chroot_tmpdir/scmroot/dl-fedora
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1007112-29377/root/chroot_tmpdir/scmroot/dl-fedora'...
$ git fetch origin 26dc1bf7f79f2c9f7c19c65168ce49469cf08d13:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dl-fedora
 * [new ref]         26dc1bf7f79f2c9f7c19c65168ce49469cf08d13 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26dc1bf update to 0.9.4