$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode-bom.git /var/lib/mock/f38-build-side-43-rust-devel-1411732-31436/root/chroot_tmpdir/scmroot/rust-unicode-bom
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1411732-31436/root/chroot_tmpdir/scmroot/rust-unicode-bom'...
$ git fetch origin 22f88f2c5bda5e8ad6b402b963b5d830f14af155:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode-bom
 * [new ref]         22f88f2c5bda5e8ad6b402b963b5d830f14af155 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22f88f2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild