$ git clone -n https://src.fedoraproject.org/rpms/perl-SVK.git /var/lib/mock/f41-build-1146545-21197/root/chroot_tmpdir/scmroot/perl-SVK
Cloning into '/var/lib/mock/f41-build-1146545-21197/root/chroot_tmpdir/scmroot/perl-SVK'...
$ git fetch origin c5a15ea539db034d0e5025c612a221afbda796f6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-SVK
 * [new ref]         c5a15ea539db034d0e5025c612a221afbda796f6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c5a15ea Eliminate use of obsolete %patchN syntax (#2283636)