$ git clone -n https://src.fedoraproject.org/rpms/R-gargle.git /var/lib/mock/f38-build-side-42-init-devel-728966-27432/root/chroot_tmpdir/scmroot/R-gargle
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-728966-27432/root/chroot_tmpdir/scmroot/R-gargle'...
$ git fetch origin 91d0f3dc34d1c54d4f9691b381dcdde109588ce7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-gargle
 * [new ref]         91d0f3dc34d1c54d4f9691b381dcdde109588ce7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91d0f3d Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild