$ git clone -n https://src.fedoraproject.org/rpms/rust-html5ever.git /var/lib/mock/f45-build-42371-793/root/chroot_tmpdir/scmroot/rust-html5ever
Cloning into '/var/lib/mock/f45-build-42371-793/root/chroot_tmpdir/scmroot/rust-html5ever'...
$ git fetch origin 1deda99107f13c42f1e47055600fe28929f87306:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-html5ever
 * [new ref]         1deda99107f13c42f1e47055600fe28929f87306 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1deda99 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild