$ git clone -n https://src.fedoraproject.org/rpms/umbrello.git /var/lib/mock/f42-build-3494566-45873/root/chroot_tmpdir/scmroot/umbrello
Cloning into '/var/lib/mock/f42-build-3494566-45873/root/chroot_tmpdir/scmroot/umbrello'...
$ git fetch origin 62f2fbe814e809c67c06696b5d4695491bb1f1cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/umbrello
 * [new ref]         62f2fbe814e809c67c06696b5d4695491bb1f1cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62f2fbe 25.04.0