$ git clone -n https://src.fedoraproject.org/rpms/perl-Devel-DProf.git /var/lib/mock/f41-build-800488-13676/root/chroot_tmpdir/scmroot/perl-Devel-DProf
Cloning into '/var/lib/mock/f41-build-800488-13676/root/chroot_tmpdir/scmroot/perl-Devel-DProf'...
$ git fetch origin cf9035fccd3d88c7d79f09f2018d38a34efe0834:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Devel-DProf
 * [new ref]         cf9035fccd3d88c7d79f09f2018d38a34efe0834 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf9035f Eliminate use of obsolete %patchN syntax (#2283636)