$ git clone -n https://src.fedoraproject.org/rpms/rust-gimoji.git /var/lib/mock/f42-build-3304427-41426/root/chroot_tmpdir/scmroot/rust-gimoji
Cloning into '/var/lib/mock/f42-build-3304427-41426/root/chroot_tmpdir/scmroot/rust-gimoji'...
$ git fetch origin cb8866a597f59d8eaebe6eb2b065420048243b19:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gimoji
 * [new ref]         cb8866a597f59d8eaebe6eb2b065420048243b19 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb8866a Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild