$ git clone -n https://src.fedoraproject.org/rpms/R-crosstalk.git /var/lib/mock/f38-build-side-42-init-devel-1047285-29762/root/chroot_tmpdir/scmroot/R-crosstalk
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1047285-29762/root/chroot_tmpdir/scmroot/R-crosstalk'...
$ git fetch origin 787648fc318af5a0fa9213cd1a011917b4e2309b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-crosstalk
 * [new ref]         787648fc318af5a0fa9213cd1a011917b4e2309b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 787648f Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild