$ git clone -n https://src.fedoraproject.org/rpms/perl-Coro.git /var/lib/mock/f41-build-816698-150356/root/chroot_tmpdir/scmroot/perl-Coro
Cloning into '/var/lib/mock/f41-build-816698-150356/root/chroot_tmpdir/scmroot/perl-Coro'...
$ git fetch origin 97fccdc74e9ca59c4f8e5ab3a94e3f5519d9c3b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Coro
 * [new ref]         97fccdc74e9ca59c4f8e5ab3a94e3f5519d9c3b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 97fccdc Perl 5.40 rebuild