$ git clone -n https://src.fedoraproject.org/rpms/rust-slug.git /var/lib/mock/f39-build-1517185-35696/root/chroot_tmpdir/scmroot/rust-slug
Cloning into '/var/lib/mock/f39-build-1517185-35696/root/chroot_tmpdir/scmroot/rust-slug'...
$ git fetch origin 44ccb32e8ee9cce6a5c605429dea1d6cec961b1b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-slug
 * [new ref]         44ccb32e8ee9cce6a5c605429dea1d6cec961b1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 44ccb32 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild