$ git clone -n https://src.fedoraproject.org/rpms/hexchat.git /var/lib/mock/f41-build-813569-148686/root/chroot_tmpdir/scmroot/hexchat
Cloning into '/var/lib/mock/f41-build-813569-148686/root/chroot_tmpdir/scmroot/hexchat'...
$ git fetch origin 8b6ec122fbd99246e5e3c1fc6fa729215ca5d78a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hexchat
 * [new ref]         8b6ec122fbd99246e5e3c1fc6fa729215ca5d78a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b6ec12 Perl 5.40 rebuild