$ git clone -n https://src.fedoraproject.org/rpms/dumpasn1.git /var/lib/mock/f45-build-7913-371/root/chroot_tmpdir/scmroot/dumpasn1
Cloning into '/var/lib/mock/f45-build-7913-371/root/chroot_tmpdir/scmroot/dumpasn1'...
$ git fetch origin ed0a37ee6dc48e089eee405de5b422d8545c9626:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dumpasn1
 * [new ref]         ed0a37ee6dc48e089eee405de5b422d8545c9626 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ed0a37e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild