$ git clone -n https://src.fedoraproject.org/rpms/rust-ash.git /var/lib/mock/f45-build-40183-769/root/chroot_tmpdir/scmroot/rust-ash
Cloning into '/var/lib/mock/f45-build-40183-769/root/chroot_tmpdir/scmroot/rust-ash'...
$ git fetch origin d2b494c50fd514a6012bd395958b473c872a185e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ash
 * [new ref]         d2b494c50fd514a6012bd395958b473c872a185e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2b494c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild