$ git clone -n https://src.fedoraproject.org/rpms/mimalloc.git /var/lib/mock/f40-build-799327-142260/root/chroot_tmpdir/scmroot/mimalloc
Cloning into '/var/lib/mock/f40-build-799327-142260/root/chroot_tmpdir/scmroot/mimalloc'...
$ git fetch origin 3792346fab98f0180a4e284d551240f93a660e88:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mimalloc
 * [new ref]         3792346fab98f0180a4e284d551240f93a660e88 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3792346 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild