$ git clone -n https://src.fedoraproject.org/rpms/rust-expat-sys.git /var/lib/mock/f39-build-1517675-35759/root/chroot_tmpdir/scmroot/rust-expat-sys
Cloning into '/var/lib/mock/f39-build-1517675-35759/root/chroot_tmpdir/scmroot/rust-expat-sys'...
$ git fetch origin 1a52dd078922bad15b9904484b800f4e08cd1c81:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-expat-sys
 * [new ref]         1a52dd078922bad15b9904484b800f4e08cd1c81 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a52dd0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild