$ git clone -n https://src.fedoraproject.org/rpms/libgit2_1.5.git /var/lib/mock/f41-build-826847-154930/root/chroot_tmpdir/scmroot/libgit2_1.5
Cloning into '/var/lib/mock/f41-build-826847-154930/root/chroot_tmpdir/scmroot/libgit2_1.5'...
$ git fetch origin 9a200063de1f51d74c64e2ea5ad46da8450d6238:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libgit2_1.5
 * [new ref]         9a200063de1f51d74c64e2ea5ad46da8450d6238 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a20006 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild