$ git clone -n https://src.fedoraproject.org/rpms/flexmark-java.git /var/lib/mock/f45-build-52040-905/root/chroot_tmpdir/scmroot/flexmark-java
Cloning into '/var/lib/mock/f45-build-52040-905/root/chroot_tmpdir/scmroot/flexmark-java'...
$ git fetch origin f129068d4b8f3f50c5a7dee7e1ce666a056a005d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flexmark-java
 * [new ref]         f129068d4b8f3f50c5a7dee7e1ce666a056a005d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f129068 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild