$ git clone -n https://src.fedoraproject.org/rpms/libcbor.git /var/lib/mock/f39-build-1489420-34501/root/chroot_tmpdir/scmroot/libcbor
Cloning into '/var/lib/mock/f39-build-1489420-34501/root/chroot_tmpdir/scmroot/libcbor'...
$ git fetch origin 757fe5900f3be9034900b2a9e58482d13a745c59:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcbor
 * [new ref]         757fe5900f3be9034900b2a9e58482d13a745c59 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 757fe59 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild