$ git clone -n https://src.fedoraproject.org/rpms/zlib-ng.git /var/lib/mock/f45-build-89-44/root/chroot_tmpdir/scmroot/zlib-ng
Cloning into '/var/lib/mock/f45-build-89-44/root/chroot_tmpdir/scmroot/zlib-ng'...
$ git fetch origin c317cb2db7117bbca97f5dfeee1f61e78df9552b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zlib-ng
 * [new ref]         c317cb2db7117bbca97f5dfeee1f61e78df9552b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c317cb2 fix RISC-V build