$ git clone -n https://src.fedoraproject.org/rpms/emu8051.git /var/lib/mock/f45-build-8152-377/root/chroot_tmpdir/scmroot/emu8051
Cloning into '/var/lib/mock/f45-build-8152-377/root/chroot_tmpdir/scmroot/emu8051'...
$ git fetch origin c4f3624863218edf22a48c529fa80e517d1257e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emu8051
 * [new ref]         c4f3624863218edf22a48c529fa80e517d1257e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c4f3624 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild