$ git clone -n https://src.fedoraproject.org/rpms/rust-invalidstring.git /var/lib/mock/f40-build-2037338-48088/root/chroot_tmpdir/scmroot/rust-invalidstring
Cloning into '/var/lib/mock/f40-build-2037338-48088/root/chroot_tmpdir/scmroot/rust-invalidstring'...
$ git fetch origin ceba9b51c8fca11e3465f4f772042ff4eb5ecec0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-invalidstring
 * [new ref]         ceba9b51c8fca11e3465f4f772042ff4eb5ecec0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ceba9b5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild