$ git clone -n https://src.fedoraproject.org/rpms/R-RMariaDB.git /var/lib/mock/f38-build-side-42-init-devel-689098-26792/root/chroot_tmpdir/scmroot/R-RMariaDB
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-689098-26792/root/chroot_tmpdir/scmroot/R-RMariaDB'...
$ git fetch origin e46be8a1dcf8e71b74540d6d5b43205e3903e222:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-RMariaDB
 * [new ref]         e46be8a1dcf8e71b74540d6d5b43205e3903e222 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e46be8a Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild