$ git clone -n https://src.fedoraproject.org/rpms/rust-quick-error /var/lib/mock/f42-build-3453377-45488/root/chroot_tmpdir/scmroot/rust-quick-error
Cloning into '/var/lib/mock/f42-build-3453377-45488/root/chroot_tmpdir/scmroot/rust-quick-error'...
$ git fetch origin 39ce9ec34a7458b85dfd82ada3d101404c99ead1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-quick-error
 * [new ref]         39ce9ec34a7458b85dfd82ada3d101404c99ead1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 39ce9ec Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild