$ git clone -n https://src.fedoraproject.org/rpms/perl-Crypt-DSA.git /var/lib/mock/f41-build-1250866-22988/root/chroot_tmpdir/scmroot/perl-Crypt-DSA
Cloning into '/var/lib/mock/f41-build-1250866-22988/root/chroot_tmpdir/scmroot/perl-Crypt-DSA'...
$ git fetch origin 481a60cdc6713683eb508fb7d3f3e09a091d3c97:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Crypt-DSA
 * [new ref]         481a60cdc6713683eb508fb7d3f3e09a091d3c97 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 481a60c Eliminate use of obsolete %patchN syntax (#2283636)